I ran the Yamaha YPAO auto calibration setup for setting speaker sizes, distance, volume, etc. and crossover setting. Yamaha suggested to set sub crossover at 120 and sub volume to a little less than half prior to running the auto setup. I have not viewed the setup results yet and will do that this weekend but I am very satisfied with the sound compared to last week when I was struggling with an older Onkyo receiver with limited adjustmenst especially crossover settings. My old receiver had 3 crossover settings 80, 100, 120Hz. I was advised on another forum to set crossover higher than as 120 most speakers (or most speakers my size maybe) may/do not perform effeciently all the way down to their low number. I will be curious to see where the Yamaha set the crossover.